explicit -> var: preserve comments

found by property testing

GitOrigin-RevId: c626ca0f4039927c59e7acae5c44a38fb0d31f35

java/java-impl/src/com/intellij/refactoring/introduceVariable/IntroduceVariableBase.java

@@ -62,6 +62,7 @@ import com.intellij.util.IncorrectOperationException;
 import com.intellij.util.Processor;
 import com.intellij.util.containers.ContainerUtil;
 import com.intellij.util.containers.MultiMap;
+import com.siyeh.ig.psiutils.CommentTracker;
 import com.siyeh.ig.psiutils.VariableAccessUtils;
 import com.siyeh.ipp.psiutils.ErrorUtil;
 import org.jetbrains.annotations.Contract;
@@ -961,7 +962,7 @@ public abstract class IntroduceVariableBase extends IntroduceHandlerBase {
       }
     }
 
-    return typeElement.replace(JavaPsiFacade.getElementFactory(context.getProject()).createTypeElementFromText("var", context));
+    return new CommentTracker().replaceAndRestoreComments(typeElement, JavaPsiFacade.getElementFactory(context.getProject()).createTypeElementFromText("var", context));
   }
 
   public static PsiElement replace(final PsiExpression expr1, final PsiExpression ref, final Project project)

java/java-tests/testData/codeInsight/daemonCodeAnalyzer/quickFix/explicit2var/afterNewArrayExpression.java

@@ -1,7 +1,8 @@
 // "Replace explicit type with 'var'" "true"
 class Main {
   {
-    @Anno var args = new String[42];
+      //c1
+      @Anno var args = new String[42];
   }
 }
 @interface Anno {}

java/java-tests/testData/codeInsight/daemonCodeAnalyzer/quickFix/explicit2var/beforeNewArrayExpression.java

@@ -1,7 +1,8 @@
 // "Replace explicit type with 'var'" "true"
 class Main {
   {
-    @Anno <caret>String[] args = new String[42];
+    @Anno <caret>String//c1
+  [] args = new String[42];
   }
 }
 @interface Anno {}